:root {  
  --primary-color: #7fb6f1;  
  --font-family: Arial, sans-serif;  
  --line-height: 1.6;  
} 
/* 示例：自定义重置样式 */  
body, h1, h2, h3, h4, h5, h6, p, dl, dd, ol, ul {  
  margin: 0;  
  padding: 0;  
}  

body {  
  font-family: Arial, sans-serif;  
  line-height: 1.6;  
  height: 100vh;
}  

ul, ol {  
  list-style: none;  
}  

a {  
  text-decoration: none;  
  color: inherit;  
}  

/* 更多自定义重置规则... */
:focus-visible {
  outline: none;
}